What are the examples of friendly exchanges between people all over the world in ancient times?

Zheng He went to the West, Zheng He to all countries regardless of the strong and weak proximity, equal treatment, equal treatment, instant conflict between the two countries, can still maintain great restraint, compromise, to convince people with reason, showing the neighboring country's peace **** deal with good neighborly relations, so that the traditional friendship of the people of China and Indonesia has a long history of friendship, we settled here also feel the face of the light, we are proud of Zheng He.